Time (minutes) = \frac{Total\,Words}{200\,WPM}
Density (\%) = \left( \frac{Keyword\,Occurrences \times Keyword\,Words}{Total\,Words} \right) \times 100
text.match(/[^.!?\s][^.!?]*(?:[.!?](?!['"]?\s|$)[^.!?]*)*[.!?]?['"]?(?=\s|$)/g) || []
$Time (minutes) = \frac{Total\,Words}{200\,WPM}$
$Density (\%) = \left( \frac{Keyword\,Occurrences \times Keyword\,Words}{Total\,Words} \right) \times 100$